Resolve issues reported by flake8

Additionally, add a configuration for flake8.

Author: kurtmckee

openapi_spec_validator/readers.py

@@ -1,7 +1,6 @@
 import sys
 from os import path
 from pathlib import Path
-from typing import Tuple
 
 from jsonschema_path.handlers import all_urls_handler
 from jsonschema_path.handlers import file_handler

openapi_spec_validator/schemas/utils.py

@@ -3,7 +3,6 @@
 from importlib.resources import as_file
 from importlib.resources import files
 from os import path
-from typing import Tuple
 
 from jsonschema_path.readers import FilePathReader
 from jsonschema_path.typing import Schema

openapi_spec_validator/shortcuts.py

@@ -3,7 +3,6 @@
 import warnings
 from collections.abc import Mapping
 from typing import Optional
-from typing import Type
 
 from jsonschema_path import SchemaPath
 from jsonschema_path.handlers import all_urls_handler

openapi_spec_validator/validation/caches.py

@@ -1,7 +1,6 @@
 from collections.abc import Iterable
 from collections.abc import Iterator
 from typing import Generic
-from typing import List
 from typing import TypeVar
 
 T = TypeVar("T")

openapi_spec_validator/validation/keywords.py

@@ -3,7 +3,6 @@
 from collections.abc import Sequence
 from typing import TYPE_CHECKING
 from typing import Any
-from typing import List
 from typing import Optional
 from typing import cast
 

openapi_spec_validator/validation/proxies.py

@@ -1,12 +1,9 @@
 """OpenAPI spec validator validation proxies module."""
 
 import warnings
-from collections.abc import Hashable
 from collections.abc import Iterator
 from collections.abc import Mapping
-from typing import Any
 from typing import Optional
-from typing import Tuple
 
 from jsonschema.exceptions import ValidationError
 from jsonschema_path.typing import Schema

openapi_spec_validator/validation/registries.py

@@ -2,7 +2,6 @@
 
 from collections.abc import Mapping
 from typing import DefaultDict
-from typing import Type
 
 from openapi_spec_validator.validation.keywords import KeywordValidator
 

openapi_spec_validator/validation/types.py

@@ -1,5 +1,3 @@
-from typing import Type
-
 from openapi_spec_validator.validation.validators import SpecValidator
 
 SpecValidatorType = type[SpecValidator]

openapi_spec_validator/validation/validators.py

@@ -5,9 +5,7 @@
 from collections.abc import Iterator
 from collections.abc import Mapping
 from functools import lru_cache
-from typing import List
 from typing import Optional
-from typing import Type
 from typing import cast
 
 from jsonschema.exceptions import ValidationError

openapi_spec_validator/versions/consts.py

@@ -1,5 +1,3 @@
-from typing import List
-
 from openapi_spec_validator.versions.datatypes import SpecVersion
 
 OPENAPIV2 = SpecVersion(